Adjustable  ctjttinfs-oit mechanism foe



Aug. 13, 1929. E. M. BRACKET-r ET Al. 1,724,068

l ADJUSTABLE CUTTING oF MECHANISM FOR STRHJPING MACHINES Filed Aug. 2,1926 4 Sheets-Sheet, l

2 i 90 v y' INVENTOR TTRNEy Aug. 13, 1929. E. M. BRACKETT ET AL1,724,068

ADJUSTABLE CUTTING OFF MECHANISM FQR STRIPPING MACHINES Filed Aug. 2,1925 n 4 Sheets-Sheet 2 y il l if ,50 /47 n A Sfr.: 1' '/45 /NVENTo-Rs.0/ EdwardMrac/e# H7 f4; md f d M am# @4 l A TT'ORNE y Al1g- 13, 1929- E.M. BRACKET-r ET AL 1,724,068

ADJUST-ABLE CUTTING OFF MECHANISM FOR STRIPPING MACHINES Fild Aug. 2.1926 4 sheets-sheen 3 A ToR/VE Y Aug. 13, 1929. E. M. BRACKETT ET AL1,724,068

ADJUSTABLE CUTTING oFF MEcHANxsM Fon SHIPPING MACHINES Filed Aug. 2,1926 4 Sheets-Sheet 4 qi; BY alza' fred @ac/re# ATTORNEY Patented Aug.13, 19279.

EDWARD ivi; BRAtcKnr'r AnnFREDMLYVBRACKETT; orfrornin, Kansas: u

ADJUSTABLE CUTTING-err MECHANISM non s'rerrriiite MACHINES;

application meer august 2, Y192e. semi N. 126.450.

(,)ur invention relates to a lcutting oill mechanism and `moreparticularly to an adjustable cutting off mechanism for strippingmachines. i y v It isa purpose ofpur invention to provide a machine forapplying a' strip a pair kof sheets or sheet-like members that arevarranged with their sides adjacent each other, with means for `severingsaidy strip at preden termined points tov leave said articles con nected`together in pairs by means ofk said sti-ip connecting theadjoiningedges thereof,

- Asthe sheet like members, which may a single sheet or va plurality ofsheets arranged in super-posed relation to which a sheet is secured bymeans of a strip, are of various dimensions,v it` is desirable toprovide means for adjusting, the cutting off mechanismso,that the widthofthe sheets may be compensated for, It is accordinglyy a purpose ofour.,inventionI to provide cuttingk oil' mechanism in a machine of theabove mentioned character which comprises a ro'-A tatable member iaving'a cutting member mounted thereon, said rotatable member being adjustabletransversely of vtlievfeeding means that conveys the articles securedtogether bythe strips toward said cutting off mechanism. f n i It :is afurther purpose of our invention to provide means lying in the path ofthe articles tobe acted upon by the cutting olf means, for actuating the`cutting means and to prof vide actuating means for` said cutting olfmeans that is so mounted thaty certain lportions thereof are movablewith the cutting oil' mechanism transversely of the feeding means whilecertain other portions thereof are mounted in a predetermined `relation'to the means lying in the path of the articles, which means ismountedonthe framework of the machine and is not transversely movable. p 1 i oy It a further purpose of the invention to provide means forperiodically actuating the cutting ofi' mechanism comprising a rotatablemember carryinga cutting ofi' knife, amembei' that constantly rotatesand means adapted to connect the constantly rotating mem-V beil with therotatable member, said means engaging a stop controlledby the movementof the articles carried forwardly by the feeding means and y"furthercomprising a resilient member interposed between :the rotatable memberand the Vmeans i adapted to connect the rotatable member with the confstantly `rotating member `which resilient` meansis held under tensionwhen the stop'isy engaged and whichiresilient means is adapted to move.the means interposed between the rotatable member land ,the constantlyrotating member into"v engaging position to rotate the rotatable memberwhen said stop moves out of.engagement.

Other objects and advantages .of the in-` vention ywill appear as theldescriptionofthe accompanying drawings;proceeds.l t f lowever,

ywe desire VVto` have it distinctly understood.

that we do not intend to limit ourselvesto the exact details shownk ordescribed),` but that we intend to include as part of curlinvention all.such obvious changes and modifications of parts as would occur toVr aperson skilled in this art and! as would fall within. the scope ofthe-claims.

In the drawings: y n i, Y g o Fig. 1 isa perspective view, partly.broken away, ofza stripping machine, showing our improved cutting offmechanism applied thereto. n t

Fig; 2 is a fragmentary pend.' view thereof. Fig. 3 is a fragmentaryelevational view of the cutting oft' mechanismy as viewed from theopposite side thereof from Fig.A 2,2

Fig.` 4 isa fragmentary view, partly in elevation andl partly insectiomlon awplane taken at rightangles to Fig. 3. l Y

Fig. 51 is aluperspective View ofthe intenv mitteilt driving mechanism`for the cutting off'` means, showing the samek separated.

Fig. (iris a longitudinah sectional view thereof taken substantially onithe line 6-6 ofFigS'.

Fig. 7 lis a section-taken on thezline 7--7 of Fig. 6, looking in'thedirection of the arrows; Fig. 8 is a section taken on the line 8-e8of Fig." 6,` looking in thedirection of the arrows. f i Fight) isafragmentary perspective view of' the articleL actuated tripping meansfor thecuttingoif mechanism.

FiglOis a perspective view-oftliefrotati able clutch device co-operatmgwith said g tripping means. y

Fig.` 11 is a longitudinal sectional viewy thereof..

Fig. 12 is a perspective view, partly broken away, of theslidablymounted rotatable clutch releasing member.

Fig. 13 is a fragmentary perspective view of a portion of the clutchstop releasing means.

Fig. 14 is a fragmentary section taken on the line 1.4*14 of Fig. 2.

Fig. l5 is a fragmentary perspective view of the paired'sheets andconnecting strips.

Referring in detail to the drawings:

Our improved cutting off mechanism is shown as being applied to astripping machine having` a framework 20 on which are mounted theconveyor belts 21 and 22 which operate to move the articles to which abinding strip has been applied, toward the left in Fig. 1 said articlescomprising the sheetlike members 23 and 24, secured together by means ofthe strip 25. Said strip 25 is continuous, and in order to separate thearticles, which may be pamphlets or similar articles having sheetssecured by a strip such as the strip 25, from each other, it isnecessary to sever the strip 25 adjacent the edges of the sheets 23 and24, and our improved cutting off mechanism is provided to accomplishthis purpose.

Mounted on the framework 20 is a bracket member 26 (Figs. 1 and 9) whichis secured to one of the members of the frameworkin any suitable manneras by means of the securing members 27. is in the form of a block asshown in Figs. 1 and 9 and is inset in the framework so that the uppersurface thereof is substantially flush with the frame member upon whichthe same is mounted. Said bracket member 26 is provided with an opening28 therein through which the lingers or arms 29 provided on the-starwheel 30 are adapted to project. The star wheel 30 is preferably mountedon a shaft 3l that extends through the outer wall of the bracket 2G soas to be journalled therein, and is adapted to be rotated by engagementof the articles moved along by the conveyor of the machine with thebevelled outer ends `32 of the arms 29. In order to assure engagement ofthe articles with the arms 29 a presser member 33 is provided which-ispivoted on the framework at 34 and which has a bifurcated lower endproviding the arms 35 having an opening 3G therebetween, said member 33engaging with the upper surface of the block 2G by gravity and thearticles carried by the conveyor moving` into engagement with theinclined portion of t-he member 33 will raise the member 33 suflicientlyto permit said articles to pass thereunderbut hold the same inengagement with the upper face of the member 26 so that said memberswill engage with one of the arms 29 to rotate the star wheel such adistance that the next arm 29 will be in position to be engaged by theThe bracket member 26.

next article moving along with the conveyor.

Co-operating with the star wheel 30 isa lever 37 pivotally mounted at 38upon the framework. The lever 37 is provided with an offset arm 39 atthe outer end thereof which has a bevelled end portion 4() adapted to beengaged by the arms or fingers 29 on the star wheel 30 to move the lever3'? around its pivot 38 in a clockwise direction, as viewed in Figs. 1and 9.

A spring finger 41 which has a coiled portion 42 is secured to the arm39 by means of any suitable securing member 44 and engages with the starwheel 30 as shown in Fig. 4 so as to hold one of the members 29 inposition to be engaged by the member 24 to rotate the star wheel throughthe distance from one member 29 to the next member 29. The lever 37 isnormally held in the position shown in Figs. 1 and 4, by means of aspring 45 which has a hooked end 46 eX- tending through the thickenedportion 47 of the lever 37 andwhich has a coiled portion 48 extendingaround the shaft 38 and an end portion 49 extending into a suitableopening 50 in the framework.

(3o-operating with the lever 37 is a rotatable member 51 mounted on theshaft 52 to rotate therewith and having the tapering ears or ngers 53extending outwardly therefrom at substantially diametrically op.-

posed points, the members 53 being pro-.

vided with the flat faces 54 which are adapted to engage with a shoulder55 provided on the lever 37 when the lever 37 is in the position shownin Figs. l and 4. The rotatable member 51 is not positively connectedwith the shaft 52 but is frictionally driven thereby through the layerof friction material 56 mounted between the disk like fiange 57 pinnedor secured in any other manner to the shaft 52 so as to rotatetherewith, and the flat face of the member 51. The member 51 is heldyieldingly in engagement with the friction material 5G by means of acoiled spring 58 mounted between the disk or washer 59 and the member51, the tension of the spring 58 being adjusted by means of the nut GOengaging the screw threaded end 61 of the shaft 52. The disk 57 bearsagainst a shoulder G2 provided on the shaft 52. Accordingly, when themember 51 has one of the projecting vwings 53 thereof in engagement withthe shoulder 55, the shaft 52 will rotate without rotating the member51. However, should the lever 37 be moved out of its normal position byone of the members 29 engaging with the beveled end 40 thereof, themember 53 will be disengaged from the shoulder 55 and the member 51 willrotate. This rotation, however, will only be through half a revolutionof the member 51 because the other member 53 will then engage with theshoulder 55 in viewl of the fact that the lever 37 will have beenrestored to normal positionby means ofthe spring 45.'

Secured to the member 51 so as to rotate therewith is a cup-like' member63 which has a iiange portion Gelengaging in a recess in the member 51,saidmember 63 being provided with ears G5 `through which' thesecnring.members (56 extend, said securing members (56 engaging withsuitableopenings in the `member 51 to secure the members 63 thereto. Tlieinember08 iis provided with a projecting hub portion G7 which has an opening 68therein loosely receiving the polygonal,l and preferably square, `shaittG9 which is secured to thehub by means of a pin 70. l 1

Mounted on the squared shaft 69 so as to be slidable,andnoi'i-rotatable, thereonA is ay collar 71 y(Fig. 12) whichisprovided'with the wings or outward projections 72 providing the abruptshoulders 73 thereon, the opposite sides of the projections 72 beinginclined as `indicated at 74; to provide cam faces.`

The member-71 i'sprovided with an outwardly `extending hub portion 7 5through which the shaft G9 extends, 'said hub "portion beingreceived-*within a bearing 76 provided in the end of the bracket arm 77which. extends inwardly from the carriage 78. The collar 79 is securedon the hub portion 7 8 outwardly from the bracket arm 77 to hold themember 71 in assembled relation with the arnr 77, the shaft G9 extendingthrough an enlarged opening the memberV 77, as will be evident fromFig.- 1.

The carriagey 78 isadjustably mounted on the transversely extendingmember 80y of the frame by means rof the securing members 81 which arescrew threadedly engaged with sleeve like members 82 (Fig. v14) havingflanges 83 engaging the'roar face'ofv the member 80, the heads 8K1v ofthe securing members engaging' the outer face of the member 7 8, andwashers 85 being provided between said -heads and the member 78. Slots80 are provided in the member 80 receiving the securing members 81 sothat when the screw threaded securing members 81 are turned loutwardlythe member 78 can be slid crosswise on theframework on` the member 80.Aslthe member 78 is adjusted transversely of the frai'neworlggthe arm 77will move therewith and will `move `lengthwise of the shaft 69 carryingthe member 71 and the collar 7 9, the collar-being secured to the hubportion. 75 by any suitable means such as the pin `87. The carriage 7871s provided with a substantially' semicircular depending portion 88which is provided with a peripheral flange 89, said Harige beingthickened at Ithe `lower end 90 thereof and being provided with `an ear91 at said lower ed portion 98y (Fig. 13) ofwh'lclris mounted the hubportion 94 of lever 95,"saidlever 95 being provided with an adjustableeX- tension 96 held in placefby means of these curing members 97, saidextension 96 being engaged bythe projections 72 on they meniber 71k toswing saidumember 95 in a clock` wlse direction about the pivot 92, asviewed in Figf. v

The hub portion 911 is provided with a flattened face 98 from'which thelug or finger 99 projects. A; bellcrank lever 100 pivotally mounted onthe pivot member 101` which is mounted in the depending ear portion 91of the member 78 and has an n an arm 107 which is provided with a curvedet portion 108 and terminates in an up# ward extension 109. f coilspring 110 eX- tends from the arm 107'tothe flange 89, the opposite endsof the spring being hooked' in openings in said members 107 and89respectively. The tendency, accordingly7 is for the bell crank leverto remain inthe position shown Figs. 2 andk 7 with the arm 102 inengagenient with the projection 99. 'y

The arm 103 is provided with? a bore or recess v111 within which theheaded member 112 having a head 113 is slidably mounted. The member 112is further provided with a stem portion lltVv (Fig. 7 and a coil spring115 is mounted between the shoulder formed between the portion 114 andthe main body portion of the member 112 and the bottom .Y

of 'the bore'111. The head 113 'lies closely adjacent the flat wallportion 11G between the reduced extension 1061A andthe shoulder 105,Vand a stop member which may be in the member 117 so as to limit theoutward movey ment of the member 112.

A bearing member 118 having ya head 119 and a screw threaded portion120-engaging .with ascrew threaded opening in the ineinber 78 is mountedsofas to project from the outer face ofthe member 7 8.v Mounted torotate on the bearing member 118 .is a cutter cutter member 122 ispreferably.secured tok oneV face of vthe member 121, ysaid member 121being preferably provided with a flange 125 defining a groove 126 andisl further provided with a projecting hub portion havingthe circularportion'127, the polygonal portion 128 and the tubular portion ofreduced diameter 129. The polygonal portion 128 is preferably `providedwith a plurality of elongated flat faces 130, there being eight of suchfaces shown in the drawings, and

with slightly flattened portions 131 alter-v .projecting stop member 135thereon which has a substantially radial face 136 providing an abruptshoulder on one side thereof and which is rounded ofi1 as at 137 on theopposite side thereof. lVhen the member 103 is in the position shown inFigs. 2 and 7, the head 113 of the member 112 is engaged by the stop135, thus holding the member 132 from rotation. The collar 132 isfurther provided with alternating slots 138 and project-ions 139 formingcollectively a slotted flange projecting in the opposite direction fromthe stop members 133 and 134. yThe slotted flange portion formed in thismanner embraces the polygonal portion 128 of the member 121 and is inturn embraced by the endwise extending annular fiange portion 140 on theclutch member 141, said clutch member 141 being provided with a beltgroove 142 for receiving a driving belt 143 and is recessed to receivethe head 119 of tie member 118.

The member 141 is rotated' by means of the belt 143 which also p-assesover the grooved pulley 144 which is slidably mounted on the squaredshaft 145. The squared shaft 145 extends through a suitable bearing 146,said bearing 146 being provided on a bracket 147 carried by the depending portion 88 of the member 78, being secured thereto by means ofthe securing members 148. lThe member 144 is provided with a sleeve likeextension 149 eX- tending through the bearing 146, the bearing beingprovided with a suitable antifriction lining 150. A collar 151 is pinnedto the sleeve like portion 149 to hold the meinber 144 in positionrelative to the bearing 146, and a plate 152 is secured to the member144 by means of the screws or other securing members 153, saidplate'being provided with a squared opening to receive the shaft 145whereby the shaft is slidable in the member 144, but will rotate thesame.

The bearing bracket 147 is adjust-able relative to the member 88 due tothe fact that the same is slotted at 154 where they securing members 148pass therethrough. The shaft 145 also has mounted thereon in fixedposition a groovcd pulley 155 over which the belt 156 passes, said belt156 passing over a suitable driving pulley mounted on the framework ofthemachine. The pulley 155 is constantly rotated by means of the belt156 land accordingly the pulley 144 is constantly rotated, rotating theclutch member 141 constantly.

The polygonal portion 128 of the member 121 forms a co-operating clutchmember with the clutch member 141, rollers 157 being mounted in theslots 138 in the member 132 and engaging with either the faces 130 orthe faces 131 on the member 128. When the rollers 157 are in theposition shown in Fig. 7 in engagement with substantially the centralportions of the flat faces 130, they are the nearest to the axis of themember 128 and will be out of engagement with the inner face of theflange 140. This is the position of the parts when the stop 135 is inengagement with the head 113. The stop 135 is held in engagement withthe head 113 by means vof a coil spring 158 mounted in the groove 126with one end in engagement with the stop pin 159 and the other endthereof in engagement with the stop lug 133. The spring 158 is normallyunder compression and the stop lug 134 is mounted between the stopmember 159 and a stop member 16() which has an outwardly extending stopflange 161. The stop flange 161 engages with the reduced end portion 162of the stopfinger 163 which is mounted upon the pivot member 164provided on the transversely extending bar 165 extending between theopposite angular flange portions 17() on the member 78. The stop finger163 is provided with an angular end portion 171 against which thecompression spring 172 bears so as to normally hold the member 163 insuch a position that the end portion 162 will engage with the stop 161to prevent clockwise rotation of the member 121 as viewed in Fig. 8.Accordingly, with the spring 158 compressed between the stop 133 and thestop 159, the stop 134 will be in engagement with the stop 160 and theflange 161 on the stop 160 will be in engagement with the end 162 of thestop finger 163, the compression of the spring 158 furthermore holdingthe stop 135 in engagement with the head 113.

Accordingly, when the member 71 is rotated so that one of theprojections 72 thereon engages withthe end portion 96 of the lever 95,the downward movement of said end portion will raise the lug 99,rotating the bell crank lever so as to move the head 113 out ofengagement with the stop 135, whereupon the spring 158 will act to turnthe collar 132 relative to the member 121, moving the rollers 157 fromthe central portions of the flat faces 130 toward the faces 131, thuscarrying said rollers 157 outwardly and into engagement with the flange140. When the rollers 157 engaged With the flange 1410 the member 121 isrotated with the member 14:1, moving the cutter 122 into cuttingrelation with thesquared edge 178 provided on the member 78, thusycutting the strip 25 at this point.` However, when the member 51 hasmade half a turn `thestop 53 lwill engage with the shoulder' 55, thushalting the rotation of the'squared shaft 69 and stopping the member 71with the member 72 out of engagement With the end 9G of thev lever 95. t

to restore the bell crank lever '100 to its original position, movingthe head 113 of the member 112 into the .path of thestop lug 185, thusstoppingthe member 132. in its rotation when the member 121 has made onecon'iplete turn, and with the vknife 122 in substantiallythe positionshown in Fig; ,2. When` the lug 13 5 engages with the headL `113 thespring 1,15is compressed, absorbing the impact of the parts. .Hoivevergwhen the member 132 is halted in its movement, the member 141 continuesto rotate, thus causing the rollers 157 to again becarried around to theposition shown in Fig. 7 ,c disengaging the member 132 from the member`1411, again compressing the spring 158 and thus resetting the clutchfor the next actuation thereof. `This occurs at -such a point that thestop finger 1G8fengages with the stop projection 161 to hold, the member1.21 from' reverse rotation.V

The shaft 52 is preferably anextension of one of the: conveyor belt,pulley shafts and accordingly the member 71 will rotate in a definiteproportion to the rate of travel of the conveyor belts 21 and 22.Accordingly when themember 29 is actuated by one of the articleslcarried forward by the conveyor, moving the member 37 to such a,position as to release themember 51, this will cansey the projection 72ony the member 71 to engage with. the member 9G at such a time that `thestrip 25 will be cut byr the .knife 122, substantially in alignment withthe edges of the sheets 23 and 211, the knife 122 rotating rapidly andnaccordingly l cutting substantially instantaneously.

. The plate or bar 165 (Figs. 1, 2.7and is preferably yrnfovided withanotch 17 l to accommodate the fastening member 81 at `one end thereofand an opening 175 to accommodate the other fastening member 81 at. the

otherend thereof andis cut 17,6 and 177 toaccommodatethe moving `partsofthe device.` The` depending.' curved platelike member 88 is preferably.provided with opening 178 throughfivhicli,an .oiled .feltcoveredfroller 17 9 projects soas toengage with the knife' v`122 toVclean adhesive that may be"` thereon from the same.y The roller 179 ismounted upon a shaft180:exn

rou gli bearing 1.81 in tl w a r gnstablgv The spring I1l() thus freemeans of a plate 182 receivinga reducedend portion of the shaft 180,said plate being held in position vby means `of the faste/n ing member183. The other end of the shaft 18() is provided with suitable meanssuch `as the Washer 1841 and the cotter pin185 `for holding the rollersin position ,thereon` l/Jhat We claim and` desire to secure by ,LettersPatent iszi i 4 1. In amachine ofthe character described, means-forconveying articles including a rotatable shaft, a blade, a constantlyrotating driving mechanism `having friction clutch means for moving thebladefincluding a spring-impelled clutch memberfor engaging` the bladewith the driving mechanism, ya stop `for saidmember, a stopactuatingmember, a friction `clutchon said conveyorshaft, including anelement for tripping said stop actuating member, alatchfor said tripelement, and means operable by an article being conveyed to trip thelatch.

.2, A rmachine `of the character described including an articleconveyor,a carriage adjustable transversely of .the conveyor, a bladerotatably'mounted in the carriage, a stop for `retaining the blade inset position, friction clutch mechanism for rotating and resetting theblade, a spring for moving' one 4clutch member into engagement with theother, a trip for said stop, meansfor actuatingsaid trip, and a latchfor said actuating means operable lby an article on the conveyor. l

8. In a machine of the characterdescribed, a knife, a vrrotatable membercarrying said rknife and ,means for periodically rotating knife `andmeans for periodically rotating said member tomove said linifeintocutting position comprising a rotatingl shaft, a member constantly.rotated from said shaft, and means for periodically.connecting saidmembers, said lastnnentioned'means comprising ,an element `havingVlimited movement relative to said knife-carrying member, .saidinnfe-carryingr member'l having portions of greater rand lesserdiameter, and outwardly .movable means engaging said element and.normally engaging ,saidl portions of ilesser diameter, but movableoutwardly by engagement with `said pQriOIl'S 'of greater-diameter togrip said constantly` `rotating member it of saidgelement relatifs, to

5. In a machine of the character described, a knife, a rotatable membercarrying said knife and means for periodically rotating said member tomove said knife into cutting position comprising a rotating shaft, amember constantly rotated from said shaft, and meansl for periodicallyconnecting said members, said last-mentioned means comprising a collarhaving limited movement relative to said rotatable member and beingprovided with openings therein, outwardly movable means in saidopenings, said rotatable member having portions ofv greater and lesserdiameter embraced by said collar, said outwardly movable means normallyengaging said portions of lesser diameter, but being movable outwardlyby engagement with said portions of greater diameter to grip saidconstantly rotating member upon movement of said collar relative to saidrotatable member.

6. In a machine of thejcharacter described, a knife, a rotatable membercarrying said knife and means for periodically rotating said member tomove said knife into cutting position comprising a rotating shaft, amember constantly rotated from said shaft, and means for periodicallyconnecting said members, said lastmentioned means comprising a collarhaving limited movement relative to said rotatable member and beingprovided with openings therein, rollers mounted in -said openings, saidrotatable member having portions of greater and lesser diameter embracedby said collar, said rollers mounted normally engaging said portions oflesser diameter, but being movable outwardly by engagement with saidportions of greater diameter to grip said constantly rotating memberupon movement of said collar relative to said rotatable member.

7 In a machine of the character described, a knife, a rotatable membercarrying said knife having a polygonal portion and means forperiodically rotating said member to move said knife into cuttingposition comprising a rotating shaft, a member having an endwiseprojecting annular flange thereon constantly rotated from said shaft andmeans for periodically connecting saidmembers comprising a collarembracing the polygonal portion of said rotatable member and rotatablein said annular flange, said collar having openings therein, and rollersmounted in said openings and engaging the polygonal portion of saidrotatable member, said rollers being normally out of engagement withsaid annular flange but being movable into engagement therewith uponrelative movement of said collar and said rotatable member.

8. In a machine of the character described, a rotatable member, a knifemounted thereon and means for periodically rotating said member to movesaid knife into cutting position comprising a clutch member, resilientmeans interposed between said rotatable member and said clutch member, astop engageable by said clutch member, said resilient means beingcompressed when said clutch member is engaging said stop, a(zo-operating clutch member, means for rotating said cooperating clutchmember, and meansl actuated by said resilient means to engage saidclutch members when said stop is moved out of engagement with said firstclutch member.

9. In a machine of the character described, a rotatable member, a knifemounted thereon and means for periodically rotating said member to movesaid knife into cutting position comprising a clutch member, resilientmeans interposed between said' rotatable member and said clutch member,a stop engageable by said clutch member, said resilient means beingcompressed when said clutch member is engaging said stop, means forholding said rotatable member against reverse rotation when said clutchmember is engaging said stop, a co-operating clutch member, means forrotating said co-operating clutch member, and means actuated by saidresilient means to engage said clutch members when said stop is movedout of engagement with said first clutch member.

l0. In a machine of the character described, a rotatable member, a knifemounted thereon and means for periodically rotating said member to movesaid knife into cutting position comprising a clutch member, resilientmeans interposed between said rotatable member and said clutch member, astop engageable by said clutch member, said resilient means beingcompressed when said clutch member is engaging said stop, a cooperatingclutch member, means for rotating said co-operating clutch member, andmeans actuated by said resilient means to engage said clutch memberswhen said stop is moved out of engagement with said first clutch member,said first clutch member and said rotatable member having engaging meansto positively drive said rotatable member when said stop is disengagedtherefrom. 11. In a machine of the character described, a rotatablemember, a knife mounted thereon and means for periodically rotating saidmember to move said knife into cutting position, comprising a clutchmember, resilient means interposed between said rotatable member andsaid clutch member, a stop engageable by said clutch member, saidresilient means being compressed when said clutch member is engagingsaid stop, a cooperating clutch member, means for rotating saidco-operating clutch member, means actuated by said resilient means toengage said clutch members when said stop is moved out of engagementwith said first clutch member, and stop releasing means actuated;

by the articles to be acted on by said knife.

12. In a machine of the character described, means for conveyingarticles in a predetermined path, cutting mechanism adapted to operateon said articles, and means for actuating said cutting means com prisinga member engaged by said articles as the same are moved along by saidcon'- veying means, a rotatable member, releasable means normallyholding said rotatable member against movementy and movable out ofholding position when said first member is engaged by one of saidarticles to permit said rotatable member to move through a predeterminedarc, a clutch mechanism for driving said cutting mechanism and a stopfor holdingsaid clutch mechanism in inoperative position, said stopbeing moved out of holding position upon movement of said rotatablemember throughsaid arc.

13. In a machine of the character described, a framework, a conveyorextending longitudinally of said framework, cutting mechanism mounted ona carriage adjustable transversely of said framework, clutch kmechanismon said carriage for periodically operating` said cutting mechanism,means on said carriage for holding said clutch mechanism indisengagement and means for re-r leasing said holding means, comprisinga member on said framework engaged by articles on said conveyor ataprcdetermined point in their movement and means for actuating saidreleasing` means. actuated by said member, said last-mentioned meanscomprising elements mounted on ysaid framework and elements adjustablewith said carriage. y

111-. In a machine of the `character described, a -framework, a conveyorextending longitudinally of said framework, cutting mechanism mounted ona carriage adjustable transversely of said framework, clutch` mechanismon said carriage for periodically operating said cutting mechanism,means on said carriage for holding said clutch mechanism indisengagement and means for releasing said holding means, comprising amember on said framework engaged by articles on said conveyor at apredetermined longitudinally of said framework, .cutting j mechanismmounted on a carriage adjustable transversely of said framework, clutchmechanism on said carriage for periodically. op-

erating `said cutting mechanism, means on saidcarriage for holdingsaidclutch mechanism in disengagement and means for releasing saidholding means, cemprising a memberV on said framework engagedby'articles on said conveyor at a predetermined point in their movementand means for actuating said releasing means actuated by said member,said last-mentioned means comprisingelements mounted on said frameworkand elements adjustable with said carriage and comprising an axiallyslidable, rotata-V ble member.

16. In a ymachine of the character described, aframework, a conveyorextending longitiiidinally of said framework, cutting mechanism mountedon a carriage adjustable transversely of said framework, clutchmechanism on said carriage for periodically operatingsaid cuttingmechanism, means onv said carriage for -holdingsaid clutch mechanism indisengagement and means for releasing said holding means, comprising amember on said framework engaged by articles on said conveyor at apredetermined point intheir movement and means for actuating saidreleasing means actuated byl said member, said Alast-mentioned meanscomprising'elements mounted on'said :trainework and elements adjustableVwith said cai'- riage and comprising an axially slidable, rotatablemember, rotatable through a predetermined are to trip said Vreleasingmeans.`

In testimony whereof we aiix our signatures.

EDIVARD M*I BRACKETT. vvFRED M. BRACKETT.

